This depends on what organism you're referring to.
Humans have 23 sets of chromosomes.
In mitosis, identical cells are being produced.
Answer:
A/D
Explanation:
D, Fertilizers put more sulfur in the ground than their should be.
A, fossil fuels, could also be the answer. When we combust fossil fuels we release the sulfur in them into the atmosphere when they should not be in the air.
1.Artificial
c.blood and cells
c.presence or absence of a particular plasma
As the plate gets pushed down it gets closer to the center of the earth so it melts. It is less dense so it rises to the surface, tension builds up, and forms a volcano - I am almost positive this is accurate